Implementing a real-time Twitter-based system for resource dispatch in disaster management

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• 作者：Xiannian Chen ; Gregory Elmes ; Xinyue Ye ; Jinhua Chang
• 关键词：Volunteered geographic information ; Tweets ; Geo ; tagged tweets ; Distributed geodatabase ; Web GIS ; Disaster management
• 刊名：GeoJournal
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：81
• 期：6
• 页码：863-873
• 全文大小：1,834 KB
• 刊物类别：Earth and Environmental Science
• 刊物主题：Geography
  Geography
  Environmental Management
  Hydrogeology
  Ecology
  Methodology of the Social Sciences
  
• 出版者：Springer Netherlands
• ISSN：1572-9893
• 卷排序：81

文摘

This study investigates the possibility of utilizing VGI in disaster management. Effective cross-jurisdictional disaster management requires real-time information, which is not available from official sources. This paper identifies tweets from Twitter as a potential VGI data source and shows how to discover and utilize relevant tweets. The paper proposes research methods for real-time (or near real-time) tweets harvesting, live tweets saving in a distributed geodatabase, and real-time VGI data redistribution. The study implements a Web GIS application as a platform for geo-tagged tweets operation. The implemented Web GIS application includes a tweet discovery component, a geo-tagged tweets mapping component, as well as an online geo-tagged tweets operation and analysis component. The major tasks include how to record the harvested geo-tagged tweets in a geodatabase so that it can be redistributed in real-time. Based on tweets from Hurricane Joaquin in 2015 and a hypothetical mass evacuation, the case study evaluates the pros and cons of VGI for response in emergency management. Spatial–temporal analysis components are also demonstrated.